Question #895

试题更新时间: 2023-11-07 12:59:45

Your company runs a complex customer relations management system that consists of around 10 different software components all backed by the same Amazon Relational Database (RDS) database. You adopted AWS OpsWorks to simplify management and deployment of that application and created an AWS OpsWorks stack with layers for each of the individual components. An internal security policy requires that all instances should run on the latest Amazon Linux AMI and that instances must be replaced within one month after the latest Amazon Linux AMI has been released. AMI replacements should be done without incurring application downtime or capacity problems. You decide to write a script to be run as soon as a new Amazon Linux AMI is released. Which solutions support the security policy and meet your requirements? Choose 2 answers

A. Assign a custom recipe to each layer, which replaces the underlying AMI. Use AWS OpsWorks life-cycle events to incrementally execute this custom recipe and update the instances with the new AMI.

B. Create a new stack and layers with identical configuration, add instances with the latest Amazon Linux AMI specified as a custom AMI to the new layer, switch DNS to the new stack, and tear down the old stack.

C. Identify all Amazon Elastic Compute Cloud (EC2) instances of your AWS OpsWorks stack, stop each instance, replace the AMI ID property with the ID of the latest Amazon Linux AMI ID, and restart the instance. To avoid downtime, make sure not more than one instance is stopped at the same time.

D. Specify the latest Amazon Linux AMI as a custom AMI at the stack level, terminate instances of the stack and let AWS OpsWorks launch new instances with the new AMI.

E. Add new instances with the latest Amazon Linux AMI specified as a custom AMI to all AWS OpsWorks layers of your stack, and terminate the old ones.

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